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From any point on the circle x^(2)+y^(2)...

From any point on the circle `x^(2)+y^(2)+2gx+2fy+c=0` tangents are drawn to the circle `x^(2)+y^(2)+2gx+2fy+c sin^(2) alpha +(g^(2)+f) cos^(2) alpha=0`. The angle between the tangents is

A

`(pi)/(4)`

B

`(pi)/(3)`

C

`2alpha`

D

`alpha`

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The correct Answer is:
C
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